Water temperature control method and device for engines

A technology of engine water temperature and control method, applied in engine components, machine/engine, engine cooling, etc., can solve the problems of water temperature fluctuation, under-regulation, over-regulation, etc., to achieve the effect of water temperature

Active Publication Date: 2016-11-09
GUANGZHOU AUTOMOBILE GROUP CO LTD +1
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Problems solved by technology

However, the vehicle cooling system is a "big lag" system. Based on this water temperature control

Method used

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  • Water temperature control method and device for engines
  • Water temperature control method and device for engines
  • Water temperature control method and device for engines

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0023] figure 1 A schematic flowchart of a method for controlling engine water temperature in an embodiment is shown in . Such as figure 1 As shown, the method in this embodiment includes:

[0024] Step S101: collecting engine outlet water temperature according to a predetermined time step;

[0025] Step S102: When the engine outlet water temperatures greater than or equal to a predetermined number are collected, according to the collected engine outlet water temperatures and the collection time corresponding to each engine outlet water temperature, determine the wate...

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Abstract

The invention relates to a water temperature control method and device for engines. The water temperature control method comprises the following steps that the outlet water temperatures of the engines are acquired according to the preset time step; when the outlet water temperatures of the engines of which the quantity is larger than or equal to the preset quantity are acquired, according to the acquired outlet water temperatures of the engines and the corresponding acquired time of the outlet water temperatures of the engines, the water temperature variation function is determined; and the performance parameters of a cooling system based on the water temperature variation function is determined, and controllable parts of the cooling system are controlled according to the performance parameters of the cooling system. Through the adoption of the scheme provided by the embodiment, parts of the cooling system is controlled, accurate control of the water temperatures of the engines can be realized, and the water temperature is quickly stabilized.

Description

technical field [0001] The invention relates to the field of vehicle control, in particular to an engine water temperature control method and an engine water temperature control device. Background technique [0002] The water temperature plays an important role in the fuel consumption and emission of the engine. As the main functional system of the vehicle to control the engine water temperature, the cooling system can directly adjust the water temperature of the engine through controllable components. The current common control method is to directly control based on the current water temperature, for example, when the water temperature reaches a certain upper limit or lower limit, start a certain gear of a controllable component of the cooling system. However, the vehicle cooling system is a "big lag" system. Based on this water temperature control method, "overshoot" or "undershoot" is prone to occur, causing the water temperature to fluctuate back and forth. Contents of...

Claims

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Application Information

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IPC IPC(8): F01P7/16
CPCF01P7/167F01P2050/22F01P2050/24F01P7/04F01P7/16F01P7/164F01P2025/13F01P2025/32F01P7/161
Inventor 朱亮李鑫李忠山朱永成曾志新
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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